Guardian reporter Glenn Greenwald, who first broke the NSA story and has written extensively about cybersecurity, argued with New Yorker writer Jeffrey Toobin over the sentencing of ex-Army Pvt. Bradley Manning on “AC360″ last night. Manning, 25, was convicted of 17 of 22 charges for leaking classified military information to WikiLeaks, and though he was acquitted for the most serious charge of aiding the enemy, faces up to 136 years in prison.

Toobin largely supported the verdict, saying, “He should be going to prison and he will be,” but Greenwald argued that Manning was merely doing the job of an investigative journalist.